August w



(No Model.)

. A. W. CORDES.

PIRE PROOF CEILING.

No. 275,151. Patented Apr.3,1883.

E WITNESSBS: INVENTOR QQKQQMMOOMI @Md BY 2124i ATTORNEY N` mens.mvmnognpim wad-ingu. D. c.

AUGUST IV. CORDES,

PATENT EEICE.

or NEW YORK, N. Y.

FlRE-PROOF CEILING.

SPECIFICATION forming part of Letters Patent No. 275,151, dated April 3,1883.

Application filed June 6, 1882. (No model.)

To all whom tt may concern Y Be it known that I, AUGUST W. CORDES, of

. the city, county, and State of New York, have invented certain new anduseful Improvements in FireProof Ceilings, of which the following. is aspecification.

This invention has reference to an improved fire-proof ceiling which isto be used in connection with wooden floor-beams, it being soconstructed that the fire-prooi` plates forming the ceiling aresuspended independently ofthe distance of the beams from each other, sothat a uniform size of plates can be used, which could not be doneheretofore, as the fire-proof plates forming the ceiling have to bespecially made for the distance between the beams, and even then do notalways furnish a good iit, owing'to irregularities in the laying ofthebeams or in the shape of the plates. l

My invention consists in suspending` the liref proot` plates which formthe ceiling, not diu of wrought iron.

rectly from the door-beams, but supporting them on intermediate I-shapedbearing-rails, which are suspended transversely to the oorbeams by wireclamps or other suspension devices applied to strong nails of thebeams..

In the accompanying drawings, Figure l represents a perspective view ofmy improved iire-proof ceiling, shown as suspended from therfloor-beams, and seen from above. Fig. 2 is a perspective view of theceiling, seen from below; and Fig. 3 is a detail side view, partly insection, through one of the bearing-rails, showing the method ofsuspending the ceiling from the beams.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the floor-beams of a building,from which the fireproof ceiling is suspended at some distance below thebottom surface of the beams by bearing-rails B, of I-shapedcross-section. In Fig. 3 one of the bearing-rails B is shown in detailsection, said rails being preferably rolled The bearingrails B are hung,transversely to the beams, to thelower ends of wire suspension-clamps C,of suitable length, which are attached to the beam by nails d, as shownin Figs. l and 3. The clamps O are made of a loop-shaped upper part,that readily slides along the fastening-nail d, and of laterally-bentlower ends that take hold of the upper rail ends. The wiresuspensionclamps are firmly secured to the bearing-rails B by slidinglinks 6,which,when being moved up along the clamps C, allow them tospring apart, so as to be readily removed from the rails. On the lowerparts of the bearing-rails B are supported the fire-prooil plates E,which form the ceiling, and which are made of fireclay or other suitableiireproot' material, and provided with strengthening and overlappingribs at the upper side and dovetailed grooves at the under side for theplastering. .Over the tire-proof plates E and the rails B is preferablylaid a layer ot' cement, whereby the connection ot' the same is renderedmore rigid.

' My improved construction of fire-proof ceiling has the followingadvantages:

First. lt protects the floor-beams absolutely against re, as they areentirely separated from and protected by the lire-prooi' plates, andprevented from being charred by the tillingot' ashes between the ceilingand the beams.

Second. Only one size of lire-proof plates is required for allceilings,whatever the distance of the Hoor-beams from each other, whilethe same suspension device is used throughout.v

Third. After the ceilingis plastered theoor can be laid on the beams andnailed down without interfering in the least with the ceiling below, aseven the strongest blows have no injurious effect upon the ceiling.

Fourth. Theceilingcan bequicklysuspended at an accurate levelby simplyrunning horizontal guide-strips along opposite walls, and placing on thesame a supporting-frame at a height at which the plates are to besuspended. On this frame is placed a row of plates, which are connectedat the edges by the I-sha'ped bearing-rails, that are then suspended bythe wire clamps from the beam, after which the frame is moved forwardfor the next row of plates, and so on.

Fifth. As the ceilingis freely suspended from the beams, the shrinkageor warping ot the beams has noinfluence on the ceiling and produces nocracks or inequalities therein, espe- Ycially as the loops ofthe clampsmove up along the nails whenever a settling in downward direction takesplace.

Havingthus described myinvention, I claim as new and desire to securebyLetter's Patent- 1. The combination of the wooden iloor= ICO beams A,bearingrals B, suspension devices In testimony that I olailn theforegoing as C, applied to the side of the beams near the my inyention Ihave signed my name in presupper part thereof and to the bearing-rails,ence of two subscribing witnesses.

and lire-proof plates supported by the bearing 5 rails, substantially asset forth. AUGUST IV. CORDES.

2. The combination ot1 the floor-beams A A, I-shaped bearing-rails B B,Wire suspension- Vitnesses: clamps C G, hung to nails d of the clampsand PAUL GOEPEL, applied by links e to the rails, and fire-proof CARLKARR. 1o plates E, substantially as set forth. i

